Checking an ICQ number

SKYDOS · #1 (**permalink**) November 8th, 2008, 10:13 AM

i have a question...
i wrote this script on J to check user's ICQ number...
where is my mistake?

if an ICQ number is equal to '646546545' the result is 'true', and the same result is when icq = 'a646546545'

<script type="text/javascript" language="javascript">
var ICQ = "a646546545";

var oRegExp = new RegExp ("[0-9]{9}");

document.write (oRegExp.test (ICQ));
</script>

thank's

don't worry, be programmer

SKYDOS · #2 (**permalink**) November 9th, 2008, 02:01 PM

:(hayyyy!!! anybody!!

don't worry, be programmer

Old Pedant · #3 (**permalink**) November 9th, 2008, 03:48 PM

You need start and end markers:

var oRegExp = /^\d{9,9}$/

The ^ means "match the beginning of the text" and the $ means "match the end of the text."

Your expression was just asking for 9 digits *ANYWHERE* in the text. So it would have said TRUE even for
abcdefghijklmn111222333opqrstuvwxyz

SKYDOS · #4 (**permalink**) November 9th, 2008, 03:55 PM

Quote:

quote:Originally posted by Old Pedant
You need start and end markers:

var oRegExp = /^\d{9,9}$/

The ^ means "match the beginning of the text" and the $ means "match the end of the text."

Your expression was just asking for 9 digits *ANYWHERE* in the text. So it would have said TRUE even for
abcdefghijklmn111222333opqrstuvwxyz

thank's!!!

don't worry, be programmer

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